Enhancement: add a "print this map" button

[kidwellj]

Would be good to bake-in ability for end user to export current map to PNG or PDF for printing.

[danhillcode]

Ok figured this one out but just making a note to myself because I need to add it later. https://github.com/Igor-Vladyka/leaflet.browser.print This is the correct library will add this in this week.

[danhillcode]

It adds to map so will add to the bottom of the screen near the scale if this is ok?

[kidwellj]

Perfect. We can always re-style later. :)

[danhillcode]

This is placed on the bottom now just need to test it prints as I have no printer connection.